LED Drive Test

Control the lights D39, D40 and D3 on the development board through terminal commands input.

• Turn on/off System heartbeat Light (D3):

# echo 1 > /sys/class/leds/sys_led/brightness 
# echo 0 > /sys/class/leds/sys_led/brightness

• Turn on/off user_led0 (D39):

# echo 1 > /sys/class/leds/user_led0/brightness 
# echo 0 > /sys/class/leds/user_led0/brightness

• Turn on/off user_led1 (D40):

# echo 1 > /sys/class/leds/user_led1/brightness 
# echo 0 > /sys/class/leds/user_led1/brightness